409630660 has 12 divisors (see below), whose sum is σ = 860224428. Its totient is φ = 163852256.

The previous prime is 409630609. The next prime is 409630679. The reversal of 409630660 is 66036904.

It can be written as a sum of positive squares in 2 ways, for example, as 201867264 + 207763396 = 14208^2 + 14414^2 .

It is a super-2 number, since 2×409630660² = 335594555224071200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10240747 + ... + 10240786.

It is an arithmetic number, because the mean of its divisors is an integer number (71685369).

Almost surely, 2^409630660 is an apocalyptic number.

It is an amenable number.

409630660 is an abundant number, since it is smaller than the sum of its proper divisors (450593768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409630660 is a wasteful number, since it uses less digits than its factorization.

409630660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20481542 (or 20481540 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 409630660 is about 20239.3344752242. The cubic root of 409630660 is about 742.6727430086.

The spelling of 409630660 in words is "four hundred nine million, six hundred thirty thousand, six hundred sixty".